PD Discussions

[Morgan]

PD discussions

Also I am interesting to know , I don’t fined reply yet.
May be Morgan know reply .
Best regards.

When Geo open my Red PD clone,he get impressed by the confusion of wires,he note the Ferrite is small,maybe he not pay atention to the Ferrite POSITION regarding the Omega coil,this is very important...
This is the point one

Take the PD away from all energy fields including lights.
This is the point two

Move the Ferrite more to front or back until you get the correct balance,this is what you call is SECRET.

One SECRET that i would like to share with people who also share with me their SECRETS.
But i dont find this people HERE.

Regards

[aft_72005]

Maybe YES.

I supose GEO already know this critical Omega+Ferrite balance.
As J_P said, i discover this Alonso´s SECRET BY CHANCE...

MAKE YOUR PD ADJUSTMENTS OUT FROM ENERGY SOURCE,this is just one first step.
If you live in the city,is more dificult.

Yes, I living in big industrial city but this isn't problem .

[aft_72005]

There is only two ways for balance of OMEGA+FERRITE :

1- You balance wrong and the OMEGA oveload the Ferrite and Passive Receiver,you cant detect the PHENOMENON,you cant detect gold or silver,only near the coil as normal MD´s.

Yes, this is correct . I did this experiment

2- You balance correctly and your OMEGA stimulate the Ferrite for LONG DISTANCE LOCATE the gold and silver.yes, done, but don’t try on real area yet.

[aft_72005]

When Geo open my Red PD clone,he get impressed by the confusion of wires,he note the Ferrite is small,maybe he not pay atention to the Ferrite POSITION regarding the Omega coil,this is very important...
This is the point one

Take the PD away from all energy fields including lights.
This is the point two

Move the Ferrite more to front or back until you get the correct balance,this is what you call is SECRET.


Yes, as I reach to this secret by oscilloscope

One SECRET that i would like to share with people who also share with me their SECRETS.
But i dont find this people HERE.

Regards

I regard to your opinion , don't like begin war again between people here , I think all propel friend.
Yes, I believe there are more secrets about correct tuning which never said
At forum.
My problem only stability of PD . If you like more speak in the matter ?

Best regards.

[aft_72005]

Hi Geo
Did try TL431 , although it had good voltage stability . But it isn’t reply.
Again instability , when only receiver of GD348 work , it is with fine stability .
As I said my PD not exactly Alonso clone , modified it to reach high sensitivity .
I trying build stability at high sensitivity .
My request from you, please up load, picture waveform of emitter TR6( base on
Qiaozhi circuit draw )
When transmitter is on and when transmitter is off.
Best regards.

[Geo]

Hi Geo
Did try TL431 , although it had good voltage stability . But it isn’t reply.
Again instability , when only receiver of GD348 work , it is with fine stability .
As I said my PD not exactly Alonso clone , modified it to reach high sensitivity .
I trying build stability at high sensitivity .
My request from you, please up load, picture waveform of emitter TR6( base on
Qiaozhi circuit draw )
When transmitter is on and when transmitter is off.
Best regards.

Hahahha...... here is all the secret.
But it is easy. As Morgan said if no good ferrite null then T1 works on saturation so it works only as MD.
This time when i connect the gnd of oscilloscope to PD it works different so i can't take a good photo (as works without connected oscilloscope to PD). Some times i had parasitic oscillations at frequencies near to 0.8...1.8Mhz. Now i don't have anything. No need for full gain from passive receiver, you can regulate the gain.....
If you made a lot of modifications you can give them to me (without value of components) so to see what is wrong. But i am sure the first wrong is the bad null.

Regards

[Geo]

When Geo open my Red PD clone,he get impressed by the confusion of wires,he note the Ferrite is small,maybe he not pay atention to the Ferrite POSITION regarding the Omega coil,this is very important...
This is the point one

Take the PD away from all energy fields including lights.
This is the point two

Move the Ferrite more to front or back until you get the correct balance,this is what you call is SECRET.

One SECRET that i would like to share with people who also share with me their SECRETS.
But i dont find this people HERE.

Regards

I saw the small ferrite and his position, but you show it only to me, so...
It was your wish...... and i know to keep my promises.

Regards

[Geo]

Hi Geo
Did try TL431 , although it had good voltage stability . But it isn’t reply.
Again instability , when only receiver of GD348 work , it is with fine stability .
As I said my PD not exactly Alonso clone , modified it to reach high sensitivity .
I trying build stability at high sensitivity .
My request from you, please up load, picture waveform of emitter TR6( base on
Qiaozhi circuit draw )
When transmitter is on and when transmitter is off.
Best regards.

and something else......
i believe that the passive receiver don't makes instability to the other circuit.
I will tell you some simple tricks (sorry i am sure that you know them).
Replace c14 with a small one (1nf... 1.5nf) and measure the frequency. If frequency is very stable (10...20hz drift on half hour) then check the +9V. You must have multimeter 41/2 digits or better. I had problem here from the LM317 and i replaced it with 7809. If you are OK (drift <5mv on 15minutes) check the voltage at collector of T14. If this is ok then check the rx coil null. Put the oscilloscope on the base of T10 and the volt/div at the minimum position where you can see the upper waveform and check if it changes due the time. Every time that you make null to the Rx coil you need at least half hour so the coil to take its final position. I can't imagine something else.

Regards

[mehdi]

One SECRET that i would like to share with people who also share with me their SECRETS.
But i dont find this people HERE.

Regards

????????????

[aft_72005]

Hahahha...... here is all the secret.
But it is easy. As Morgan said if no good ferrite null then T1 works on saturation so it works only as MD.
This time when i connect the gnd of oscilloscope to PD it works different so i can't take a good photo (as works without connected oscilloscope to PD). Some times i had parasitic oscillations at frequencies near to 0.8...1.8Mhz. Now i don't have anything. No need for full gain from passive receiver, you can regulate the gain.....
If you made a lot of modifications you can give them to me (without value of components) so to see what is wrong. But i am sure the first wrong is the bad null.

Regards

I having very good null

[aft_72005]

and something else......
i believe that the passive receiver don't makes instability to the other circuit.
I will tell you some simple tricks (sorry i am sure that you know them).
Replace c14 with a small one (1nf... 1.5nf) and measure the frequency. If frequency is very stable (10...20hz drift on half hour) then check the +9V. You must have multimeter 41/2 digits or better. I had problem here from the LM317 and i replaced it with 7809. If you are OK (drift <5mv on 15minutes) check the voltage at collector of T14. If this is ok then check the rx coil null. Put the oscilloscope on the base of T10 and the volt/div at the minimum position where you can see the upper waveform and check if it changes due the time. Every time that you make null to the Rx coil you need at least half hour so the coil to take its final position. I can't imagine something else.

Regards

Thanks for your help , I having 5 1/2 digit multi meter, but problem is other things
Best regards.

[Geo]

Thanks for your help , I having 5 1/2 digit multi meter, but problem is other things
Best regards.

Ok, so where do you see that begin the instability??? Check with the oscilloscope the signal at all transistors bases and tell me who signal changes parallel with instability????
You must set the oscilloscope at full sensitivity (lower v/div) so to be able to see every small change at signal.

Regards

[Geo]

I having very good null

Who null???
At Rx coil or at ferrite coil??
Tell me who is the voltage P-P at every coil.
Regards

[aft_72005]

Who null???
At Rx coil or at ferrite coil??
Tell me who is the voltage P-P at every coil.
Regards

This is very clear reply without any secreting “I having very good null at input PCB5 with 1-5 mv pp and having in GD
348 receiver input 350 mv pp .
Reach to point behind omega , I named it “magic magnetic storm”

Best regards.

[Geo]

This is very clear reply without any secreting “I having very good null at input PCB5 with 1-5 mv pp and having in GD
348 receiver input 350 mv pp .
Reach to point behind omega , I named it “magic magnetic storm”

Best regards.

If so, the ferrite input is fantastic (better than mine) but the 348 input is very very hight. You must make better null. My signal is less than 30mv p-p.

Regards